Sash-fastener.



No. 788,702: PATLNTBD MAYQ. 1905.

- G. H. BRIGGS.

SASH FASTENER.

APPLICATION FILED APB. e. 1904.

nuenio/L u Witness@ O T'WS alaorbv NTTE Patented May 2, 1905.

GEORGE H. BRIGGS, OF AMESBURY,*MASSACHUSETTS SASl-ll-FSTENEH.

SPECIFICATION forming part of Letters Patent No. 788,702, dated May 2,1905.

Application filed April 5, 1904. Serial No. 201,699.

T0 all whom t may con/cern:

Be it known that LGEORGE H'. Bniees,a resident of the town of Amesbury,in the county of Essex and State of Massachusetts, have invented certainnew and useful Improvements in Sash-Fasteners; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the aeeompanying drawings, and to the figures ofreference marked thereon, which form a part of this specification.

This invention relates to sash-fasteners, and has for its object toprovide a fastener which is adapted to lock the upper and lower sashesto each other and also lock both of said sashes to the window-frame.

A further object of `the invention is to so construct the lock that ittakes a certain combination of movements to actuate it. This lock isreadily operated from the inside, but impossible to operate from theoutside of the window.

With these and other objects in view the invention consists of certainnovel features, which are herein set forth, and pointed out in theappended claims.

In the drawings, Figure 1 is a plan view showing one of the sashes andwindow-casing in section, showing the relative position of my lock whenattached thereto. Fig'. 2 shows a portion of the window-casing' andsashes in elevation with my lock in position on the lower sash. Fig. 3is a plan view of my lock with the top plate removed, showing theoperating mechanism. Fig. 4 is a plan view of the case with the topplate and the actuating mechanism removed. Fig. 5 is a sectionalelevation on line 5 5 of Fig. 4. Fig 6 is a plan view of the doublebolt. Fig. 7 is an edge View of said bolt. Fig. 8 is a detail of thepawl with the actuating-spring attached thereto. Fig. 9 is a plan viewof the lower disk, which is actuated through the operating handle orknob to control the lock. Fig. 10 is an edge View of the disk shown inFig. 9. Fig.. 11 is the operating handle or knob. Fig. 12 is a plan Viewof the handle or knob shown in Fig. 11. Fig. 13 is a side elevation ofthe operatingknob and showing the broad pawl engaging the slots 26 and31 in both ofthe rotatable disks.

Referring to the drawings, 1 is the upper sash. (Shownin section in Fig.1.) In this sash is set a thin plate of metal 2, which plate has holes 3through it at intervals, as shown in Fig. 2, for the reception of one ofthe locking-bolts.

At 4 is the parting-strip. (Shown in section in Fig. l.) This strip alsohas a metal plate 5 set into one face, which plate has holes 6 throughit at intervals for the reception of the second bolt.

At 7 is the lower sash, to which is secured my locking device by screws8 8 and 9. The locking mechanism is held within the easing 10, whicheasing has an upper plate or cover 11, that is secured in place bysuitable screws. There are two locking-lmlts 12 and 13, .connectedtogether at 14, (see Fig. 6,)so that they will work simultaneously andwith one set of actuating mechanism to engage the holes in theparting-strip and those in the upper sash to lock them all together byone operation. At 1.5 is a pin projecting upward from thelaterally-extended reduced lug 16, which is a part of said bolts. Onthis pin is pivoted the pawl 17, which pawl is acted upon to be pressedoutward by spring 18. As these bolts are reeiprocated in and out theyare guided through the holes 19 and 20 in the ease, the inner end ofsaid bolt also beingl guided by the guide-lug 21, which is fixed to thebottom of the ease.

At 22 is the wire spring', one end of which has a turn around the post23 and rests against the inside of the case as a fulerum, while theopposite end engages the boltsin the manner illustrated in Fig. 3 topress the same outward.

At 24 is an inwardly-projecting hollow hub on which is rotatably heldthe disk 25. (See Figs. 9 and 10). On the edge of this disk is a notch26 for engaging the pawl 17. At about right angles to said notch is araised portion 27, extending to the outer edge of said disk. At the edgeof this raised portion on the periphery of this disk is a littleeountersunk hole 28, which serves as an indicating-spot to be used insetting the lock, as is hereinafter described.

The operating knob or handle 29 has at tached to its lower end a disk30, similar to the loose disk 25. It also has a notch 3l in its IOOperiphery to register with that in said loose disk. Projecting downwardfrom the under side of said disk 30 is a pin 32, which pin is for thepurpose of engaging' the raised portion 27 on disk 25, so that whendesired both disks may be made to turn together. Thedownwardlyprojecting trunnion 33 on the under side of the handle or knobenters the hollow hub 24, which forms a lower bearing for said handle toturn in, the upper bearing for said handle being formed by the collar34, turning in a hole to receive it made in the top plate 11.

rI`he operation of my device is further eX- vplained as follows: Thelock is secured to the lower window-sash by means of three screws, twoof which are inserted at 8 8 through the top and one at 9 through thedepending leg 26, which leg is set into the wood on the edge of saidsash, making it im possible to remove the lock from the sash withoutVtaking said sash out of the window-casing. When the top plate is inplace, it is secured by screws some of which are inserted from beneaththe casing, making it impossible to tamper with the lock without firstremoving it from the sash. In order to actuate the two bolts, it isvnecessary to bring the notch 26 in the loose disk 25 and the notch 31inthe disk 30 together in the position shown in Fig. 3. To make thesetwo notches register, it is necessary to first bring the indicating-spot28 to the front, so that it can be seen through the slot 35 in thecasing. This is done by the pin 32 engaging the raised portion 27 on thedisk 25 when the knob is turned in one direction. When the spot isbrought into the position to be seen through the opening, it indicatesthat the notch 26 is in the proper position to engage the pawl, butwhich pawl is kept from dropping into said notch by the periphery offthe upper disk against which it rests. Then'the handle is reversed androtated slowly in the opposite direction until the two notches register,and the actuating-spring 18 throws Vthe pawl 17 into engagement withboth of said notches at once. Then by turning the knob in the directionindicated by the arrow the bolts on which this pawl is pivoted may bekwithdrawnv from the holes Sand 6 and the window unlocked. To throw thepawl out of engagement with the notches, the knob is turned in theopposite direction, and the pawl -is forced out of the notches, and solong as the pin 32 engages the raised portion 27, or either sidethereof, the pawl 17 cannot engage the notches to'withdraw the bolt.

By my arrangement of bolting to the parting-strip and the opposite sashat the same time it is obvious that either the top or bottom window-sashmay be lei't part way open or locked in any desired position withoutfear of any person reaching in and withdrawing the bolts, as these boltscannot be'withdrawn except by a person on the inside, who must be ableto see the indicating spot before the combination can be set.

From the foregoing description, taken in connection with theaccompanying drawings, it is thought that the construction and operationof Ythe invention will be readily understood without requiring a moreextended eX- planation.

Various changes in Ythe form, proportion, and the minor details ofconstruction may be resorted to without departing from the spirit andscope of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A device of the character described comprising a casing having ahollow hub, a handle having a lower reduced trunnioniitting in said hub,said handle beingV provided with an integral enlarged disk having anotch formed therein, a second notched disk interposed between saidhandle and the wall of said casing and provided with a bore in whichsaid hub fits, said disk being independent of said handle, means forcausing the notches of said disks 'to coincide, a spring-pressed boltworking in said casing, anda spring-actuated pawl carried by said boltand adapted to enter said notches when they coincide.

2. A device of the character described comprisinga casing having ahollow hub, a springpressed bolt working in said casing, a handlerotatably mounted in said hub and provided with -a notch, a notched diskinterposed be- Ytween said handle and the wall of said casing andprovided with a bore in which said hub lits, said disk being independentof the handle, means wherebyv the notches ofl said disk and handle arecaused to coincide, and a springactuated pawl 'mounted on said bolt andadapted to enter said notches when they coincide.

3; A device of the character described comprising-a casing,a boltworking therein, said bolt being provided with two forwardly-extendedlocking members and a reduced guiding-shank, a spring secured in saidcasing and bearing against the shoulder formed by the reduced portionoi' `-said bolt, a plurality of notched disks, 'means for rotating thesame, and-a -pawl Vpivotallymounted on said bolt andradapted to engagesaid notches, whereby a rotation Vof said disks will withdraw said boltagainstthe action of said spring.

In testimony whereof I have hereunto set my hand this 2d day of April,A.V D. 1904.

' GEORGE H. BR'IGGS.

In presence of- ROBERT C.' CLARK, DELL W. DOLBIER.

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